A man and his equation: the anxiety-plagued nineteenth-century physicist who contributed significantly to our understanding of the second law of thermodynamics. Ludwig Boltzmann's grave in Vienna's Central Cemetery bears a cryptic epitaph: S = k log W. This equation was Boltzmann's great discovery, and it contributed significantly to our understanding of the second law of thermodynamics. In Anxiety and the Equation, Eric Johnson tells the story of a man and his equation: the anxiety-plagued nineteenth-century physicist who did his most important work as he struggled with mental illness. Johnson explains that “S” in Boltzmann's equation refers to entropy, and that entropy is the central quantity in the second law of thermodynamics. The second law is always on, running in the background of our lives, providing a way to differentiate between past and future. We know that the future will be a state of higher entropy than the past, and we have Boltzmann to thank for discovering the equation that underlies that fundamental trend. Johnson, accessibly and engagingly, reassembles Boltzmann's equation from its various components and presents episodes from Boltzmann's life—beginning at the end, with “Boltzmann Kills Himself” and “Boltzmann Is Buried (Not Once, But Twice).” Johnson explains the second law in simple terms, introduces key concepts through thought experiments, and explores Boltzmann's work. He argues that Boltzmann, diagnosed by his contemporaries as neurasthenic, suffered from an anxiety disorder. He was, says Johnson, a man of reason who suffered from irrational concerns about his work, worrying especially about opposition from the scientific establishment of the day. Johnson's clear and concise explanations will acquaint the nonspecialist reader with such seemingly esoteric concepts as microstates, macrostates, fluctuations, the distribution of energy, log functions, and equilibrium. He describes Boltzmann's relationships with other scientists, including Max Planck and Henri Poincaré, and, finally, imagines “an alternative ending,” in which Boltzmann lived on and died of natural causes.

"Computational astrophysics is a new and quickly growing discipline. In this book the authors outline the fundamentals for computational astrophysics, focusing on the use of the Astronomical Multipurpose Software Environment (AMUSE), which is a general-purpose simulation environment in astrophysics written in Python. AMUSE allows you to combine existing solvers to build new applications that can be combined again to study gradually more complex situations. This enables the growth of multi-physics and multi-scale application software in a hierarchical fashion, testing each intermediate step as the complexity of the software continues to increase. All examples in the book are associated with codes that run on a simple laptop or workstation. All figures are reproducible with a simple script, and all scripts are available online to be downloaded and run accordingly."--Source : résumé de l'éditeur.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

The first few months of the universe, the MIT bag model, and grand unified theories are among the chief concerns of these essays and articles honoring MIT theoretical physicist Francis Low. The book opens with a cluster of dedicatory pieces by Murray Gell-Mann, Marvin L. Goldberger, Jeremy Bernstein, and Val L. Fitch. The remainder of the book consists of twenty technical essays by a small galaxy of distinguished scientists: Steven Weinberg; Kenneth A. Johnson; Sidney Drell; Geoffrey F. Chew; Mitchell J. Feigenbaum; Victor F. Weisskopf; Herman Feshbach; Carleton DeTar; John F. Donoghue; D. Danckaert, P. DeCausmaecker, R. Gastmans, W. Troost, and Tai Tsun Wu, writing jointly; Roman Jackiw; William I. Weisberger; Adrian Patrascioiu; Gino Segre; So-Young Î Asim Yildiz; Jogesh C. Pati, Abdus Salam, and J. Strathdee, in another collaborative contribution; and the three editors. Among the other topics are &"Why the Renormalization Group Is a Good Thing&" - the physics of asymptotic freedom - the topological bootstrap &"The Fixed Point of Classical Dynamical Evolution and Chaos&" - compound bags and hadron-hadron interactions - &"Gauge Invariance and Mass&" - Gribov ambiguities - &"The Simple Facts about the Baryon Asymmetry of the Universe&" - preons and supersymmetry - some speculations on the origin of the matter, energy, and entropy of the universe - the Chew-Low theory and the quark model - &"From Gell-Mann-Low to Unification.&" The editors are all affiliated with the Center for Theoretical Physics at MIT.

This thoroughly up-to-date, highly accessible overview covers microgravity, collider accelerators, satellite probes, neutron detectors, radioastronomy, and pulsars.

A modern, graduate-level introduction to many-body physics in condensed matter, this textbook explains the tools and concepts needed for a research-level understanding of the correlated behavior of quantum fluids. Starting with an operator-based introduction to the quantum field theory of many-body physics, this textbook presents the Feynman diagram approach, Green's functions and finite-temperature many-body physics before developing the path integral approach to interacting systems. Special chapters are devoted to the concepts of Fermi liquid theory, broken symmetry, conduction in disordered systems, superconductivity and the physics of local-moment metals. A strong emphasis on concepts and numerous exercises make this an invaluable course book for graduate students in condensed matter physics. It will also interest students in nuclear, atomic and particle physics.